public virtual Task <Invoice> CreateAsync(InvoiceCreateOptions options, RequestOptions requestOptions = null, CancellationToken cancellationToken = default(CancellationToken))
 {
     return(this.CreateEntityAsync(options, requestOptions, cancellationToken));
 }
 public virtual Invoice Create(InvoiceCreateOptions options, RequestOptions requestOptions = null)
 {
     return(this.CreateEntity(options, requestOptions));
 }